API STD 672-2004 Packaged Integrally Geared Centrifugal Air Compressors for Petroleum Chemical and Gas Industry Services (Fourth Edition Incorporates Errata October 2007 Errata 2 J.pdf

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1、Packaged, Integrally Geared Centrifugal Air Compressors for Petroleum, Chemical, and Gas Industry ServicesAPI STANDARD 672FOURTH EDITION, MARCH 2004ERRATA, OCTOBER 2007ERRATA 2, JULY 2010Packaged, Integrally Geared Centrifugal Air Compressors for Petroleum, Chemical, and Gas Industry ServicesDownstr

2、eam SegmentAPI STANDARD 672FOURTH EDITION, MARCH 2004ERRATA, OCTOBER 2007ERRATA 2, JULY 2010All rights reserved. No part of this work may be reproduced, stored in a retrieval system, or transmitted by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written per

3、mission from the publisher. Contact the Publisher, API Publishing Services, 1220 L Street, N.W., Washington, D.C. 20005.Copyright 2004, 2007 American Petroleum InstituteSPECIAL NOTESAPI publications necessarily address problems of a general nature. With respect to partic-ular circumstances, local, s

4、tate, and federal laws and regulations should be reviewed.API is not undertaking to meet the duties of employers, manufacturers, or suppliers towarn and properly train and equip their employees, and others exposed, concerning healthand safety risks and precautions, nor undertaking their obligations

5、under local, state, or fed-eral laws.Information concerning safety and health risks and proper precautions with respect to par-ticular materials and conditions should be obtained from the employer, the manufacturer orsupplier of that material, or the material safety data sheet.Nothing contained in a

6、ny API publication is to be construed as granting any right, byimplication or otherwise, for the manufacture, sale, or use of any method, apparatus, or prod-uct covered by letters patent. Neither should anything contained in the publication be con-strued as insuring anyone against liability for infr

7、ingement of letters patent.Generally, API standards are reviewed and revised, reaffirmed, or withdrawn at leastevery five years. Sometimes a one-time extension of up to two years will be added to thisreview cycle. This publication will no longer be in effect five years after its publication dateas a

8、n operative API standard or, where an extension has been granted, upon republication.Status of the publication can be ascertained from the API Standards department telephone(202) 682-8000. A catalog of API publications, programs and services is published annuallyand updated biannually by API, and av

9、ailable through Global Engineering Documents, 15Inverness Way East, M/S C303B, Englewood, CO 80112-5776. This document was produced under API standardization procedures that ensure appropri-ate notification and participation in the developmental process and is designated as an APIstandard. Questions

10、 concerning the interpretation of the content of this standard or com-ments and questions concerning the procedures under which this standard was developedshould be directed in writing to the Director of the Standards department, American Petro-leum Institute, 1220 L Street, N.W., Washington, D.C. 2

11、0005. Requests for permission toreproduce or translate all or any part of the material published herein should be addressed tothe Director, Business Services.API standards are published to facilitate the broad availability of proven, sound engineer-ing and operating practices. These standards are no

12、t intended to obviate the need for apply-ing sound engineering judgment regarding when and where these standards should beutilized. The formulation and publication of API standards is not intended in any way toinhibit anyone from using any other practices.Any manufacturer marking equipment or materi

13、als in conformance with the markingrequirements of an API standard is solely responsible for complying with all the applicablerequirements of that standard. API does not represent, warrant, or guarantee that such prod-ucts do in fact conform to the applicable API standard.FOREWORDAPI publications ma

14、y be used by anyone desiring to do so. Every effort has been made bythe Institute to assure the accuracy and reliability of the data contained in them; however, theInstitute makes no representation, warranty, or guarantee in connection with this publicationand hereby expressly disclaims any liabilit

15、y or responsibility for loss or damage resultingfrom its use or for the violation of any federal, state, or municipal regulation with which thispublication may conflict.Suggested revisions are invited and should be submitted to API, Standards department,1220 L Street, NW, Washington, DC 20005.iiiCON

16、TENTSPage0 INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 SCOPE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 NORMATIVE REFERENCES. . . . .

17、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 DEFINITION OF TERMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24 GENERAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

18、. . . . . . . . . . . . . . .44.1 Unit Responsibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44.2 Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45 REQUIREMENTS . . . .

19、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45.1 Units of Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45.2 Statutory Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . .

20、. . . . . . . . . . . . . . . . . . .45.3 Alternative Designs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45.4 Conflicting Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46 BASIC DESIGN . . . .

21、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46.2 Pressure Casings . . . . . . . . . . . . . . . . . . . . . .

22、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66.3 Casing Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76.4 External Forces and Moments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76.5 R

23、otating Elements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76.6 Seals and Sealing Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .86.7 Dynamics . . . . . . . . . . . . . . . . . . . . . . . . . .

24、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .86.8 Bearings and Bearing Housings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .96.9 Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

25、 .106.10 Materials. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .116.11 Nameplates and Rotation Arrows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .126.12 Additional Requirements for Special Duty Packages.

26、. . . . . . . . . . . . . . . . . . . . .137 ACCESSORIES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .147.1 Drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .147.

27、2 Couplings and Guards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .157.3 Baseplate/Support Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .157.4 Controls and Instrumentation . . . . . . . . . . . . . . . . .

28、. . . . . . . . . . . . . . . . . . . . . . . .167.5 Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .207.6 Intercoolers and Aftercoolers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .217.7

29、Inlet Air Filter/Silencer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .217.8 Discharge Blowoff Silence. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .227.9 Special Tools. . . . . . . . . . . . . . . . . . . . . . . . .

30、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .227.10 Additional Requirements for “Special Duty” packages . . . . . . . . . . . . . . . . . . .228 INSPECTION, TESTING AND PREPARATION FOR SHIPMENT . . . . . . . . . . . . .238.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . .

31、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .238.2 Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .238.3 Testing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

32、. . . . . . . . . .248.4 Preparation for Shipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .268.5 Additional Inspection, Testing 7.10; 8.5; and 9.4).1.4Conflicting RequirementsIn case of conflict between this standard and the inquiry, the inquiry shall go

33、vern. At the time of the order, the order shall govern.2 Normative References2.1Reference publications are listed in Annex B.2.2All referenced standards, to the extent specified in the text, are normative.l2 API STANDARD6722.3The editions of the Annex B standards, codes, and specifications that are

34、in effect at the time of publication of this standardshall, to the extent specified herein, form a part of this standard.The applicability of changes in standards, codes, and specifications that occur after publication of this document shall be mutu-ally agreed upon by the purchaser and the vendor.2

35、.4Notes following a paragraph are informative.2.5Where dual referencing of standards occurs, the system of standards to be used shall be specified.2.6Statutory Requirements: The purchaser and the vendor shall mutually determine the measures that must be taken to complywith any governmental codes, re

36、gulations, ordinances, or rules that are applicable to the equipment.3 Definition of TermsTerms used in this standard are defined in 3.1 3.36.3.1 alarm point : A preset value of a parameter at which an alarm is actuated to warn of a condition that requires corrective action.3.2 axially split:A joint

37、 that is parallel to the shaft centerline.3.3 bearing housing:All bearing enclosures, including the gear casing.3.4 critical speed:A shaft rotational speed at which the rotor-bearing-support system is in a state of resonance.3.5 delivered flow:The flow rate determined at the compressor discharge or

38、after the discharge of the aftercooler whenincluded in the vendor scope.Note: When the flow is measured before the compressor inlet, it must be adjusted for the effects of aftercooler pressure drop, compressor seallosses, and interstage condensate removal.3.6 design:A term that may be used by the eq

39、uipment manufacturer to describe various parameters such as design power,design pressure, design temperature, or design speed.Note: This terminology should be used only by the equipment manufacturer and not in the purchasers specifications.3.7 gear wheel (bull gear):The low-speed rotor of a gear set

40、.3.8 informative element:Describes part of the standard which is provided for information and is intended to assist in theunderstanding or use of the standard. Compliance with an informative part of the standard is not mandatory.Note: An Annex may be informative or normative as indicated.3.9 inlet v

41、olume flow:The flow rate expressed in volume flow units at the conditions of pressure, temperature, compressibil-ity and air moisture content, at the compressor inlet connection. 3.10 local:The location of a device mounted on or near the equipment or console.3.11 material certificate of compliance:A

42、 document by which the vendor certifies that the material represented has beenproduced and tested in accordance with the requirements of the basic material specification shown on the certificate.3.12 maximum allowable temperature:The maximum continuous temperature for which the manufacturer has desi

43、gnedthe equipment (or any part to which the term is referred) when handling the specified fluid at the specified maximum operatingpressure.3.13 maximum allowable working pressure:The maximum continuous pressure for which the manufacturer hasdesigned the equipment (or any part to which the term is re

44、ferred) when handling the specified fluid at the specified maximumoperating temperature.3.14 maximum discharge pressure: The maximum suction pressure plus the maximum differential the compressor is ableto develop to surge at the minimum specified inlet temperature.3.15 maximum sealing pressure:The h

45、ighest pressure the seals are required to seal during any specified static or operatingcondition.3.16 normally open and normally closed:Refers both to on-the-shelf state and to installed deenergized state of devicessuch as automatically controlled electrical switches and valves.Note: The normal oper

46、ating state of such devices is not necessarily the same as the on-the-shelf state.lPACKAGED, INTEGRALLYGEAREDCENTRIFUGALAIRCOMPRESSORSFORPETROLEUM, CHEMICAL, ANDGASINDUSTRYSERVICES33.17 normative:A requirement of the standard.3.18 observed:An inspection or test where the purchaser is notified of the

47、 timing of the inspection or test and the inspectionor test is performed as scheduled whether or not the purchaser or his representative is present.3.19 panel:An enclosure used to mount, display, and protect gauges, switches, and other instruments.3.20 pinion:A high-speed rotor or rotors in a gear s

48、et.3.21 pressure casing: The composite of all stationary pressure-containing parts of the unit, including all nozzles and otherattached parts.3.22 pressure rise to surge:The difference between the discharge pressure at the rated operating point and that at the surgepoint when the unit is operating a

49、t rated inlet conditions and with a constant inlet guide vane position.3.23 radially split:A joint that is perpendicular to the shaft centerline.3.24 rated point:The maximum specified flow rate at the specified discharge pressure when operating at the specified inletconditions and coolant temperature. This is the point at which the vendor certifies that the performance is within the tolerancesstated in this standard.3.25 rated speed(also known as 100% speed): The highest rotational speed required to meet any of the specified operatingconditions.3.26 relief valve set pressure:The pressure

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